Hydraulic braking apparatus



Sept. 23, 1930. M, CHARLES 1,776,488

HYDRAULI C BRAKING APPARATUS- Original Filed June 8, 1925 Patented Sept. 23, 1930 MAURICE CHARLES, or GOURBEVOIE, Eamon PATENT orrlc HYDRAULIC BRAKING APPARATUS Original application flied June 8, 1925, Serial No. 85,740,

application filed June 25,

My invention relates to hydraulic braking apparatus of the type described and claimed in my co-pending application Serial N 0. 35,740 filed June 8, 1925.

One of the objects-of my invention is to provide an improved brakin arrangement of-the character indicated in t e application, above mentioned, of which the present application is a division, in which two brake segments participate in the-braking by equal amounts.

Other objects of my invention will be obvious to those skilled in the art in the following description with reference to the accompanying drawing given by way of example and in which the single figure represents an elevational View of a brake with parts in section constructed in accordance with my. invention. Adverting tothe drawing, two brake segments 7 f are pivotally mounted on studs 9 g respectively, said two studs bein dis- 'posed diametrically .opposite. The rake segments f f are controlled by two pistons .25 1: k slidin in cylindersz' i respectively which as s own. are receiving cylinders. Said receiving cylinders 2' 2' correspond to similar cylinders described and claimed in my co.-pending.application, above cited. In each of said cylinders are, arranged fluidtight bellows m m each acting to transmit power through the respective ends thereof which play the part of iston-heads. The advantages of t is arran ement and the control of the brake shoes wil be obvious from the figure. 1 If the wheel carrying the brake drum 7:. turns in the direction of the arrow F, the'free ends of both brake shoes are ap lied in the same direction to said drum uring braking, in such fashion that I the frictionpreated between the drum and the a brake shoes tends to expand the said brake shoes from their initial position and thus increase the braking action. I

While-I have disclosed what I deem to be t e pre ferable form of my device -I do'not wishlto he limited thereto as there might be various changes made in the construction and arrangement of from-the spiritof my lnvention'as comprecomprising, a hollow pivot point' of said first mg each of parts without departing and in France April 9, 1925. Divided and this Serial No. 288,200.

hended within the scope ofthe appended claims. Having described my invention what I' claim as new and desire to secure by Letters Patent is- 1. A hydraulic brake of the type described cylindrical brake drum, an arcuate brake shoe pivoted at one end within said drum, a second arcuate brake shoe pivoted at the end diametrically opposite the pivot point of said first brake shoe and fluid actuated means for each of said brake shoes associated with the free end thereof adapted to swing each of said shoes about the respective pivot thereof in the direction of said drum.

2. A hydraulic brake of the t 0 described comprising, a' hollow cylindrical rake drum, an arcuate brake shoe pivoted at one end within said drum, a second arcuate brake shoe pivoted at the end diametrically opposite the brake shoe, a fluid receiving cylinder for each of said shoes, 9. piston in each of said cylinders adapted to expand its respective brake shoe with respect to said drumand a fluid tight bellows sealsaid pistons to its respective cylinder. v

3. A hydraulic brake of the ty e described comprising, a hollow cylindrical rake drum an arcuate brake shoe pivoted at one end within said drum, 9. secon arcuate brake shoe pivoted at the end diametrically opposite the pivot point of said first brake shoe, a flllld receiving cylinder for each of said shoes, a piston in each of said cylinders adapted to expand its respective bra e shoe W1tl1 ct to said" drum,'-a fluid tight bellows sea g each of said'pistons to its respective cylinder and a common means for supplying a fluid to said cylinders exterior of said pistons and said sealing bellows.

In testimony whereof I have signed this specification.

MAURICE CHARLES. a6 

